Force multipliers, also known as simple machines, are devices that are able to provide greater output force than input force. Levers, pulleys, ramps, screws, axles and wedges are all force multipliers that operate using basic physical principles in order to increase output force and make work easier.Know More
Work is defined as applying force to an object in the direction of motion. Simple machines make it possible to increase the amount of usable output force either by reducing friction or producing greater output force by increasing the distance that force must be applied. Simple machines are also able to change the direction of force that is being applied, making it possible to transfer force from one place to another.
Force multipliers have been in use since ancient times. Simple machines played a vital role in many of the earliest construction and engineering efforts, making possible feats that could not have been accomplished without mechanical assistance. Some of these machines, such as the wheel and the axle, rank among the most important human inventions in all of history. Several more sophisticated machines utilize one or more of these force multipliers working in concert in order to provide greater effect or to increase the magnitude of force being multiplied.Learn more about Physics
A net force is the remaining force that produces any acceleration of an object when all opposing forces have been canceled out. Opposing forces decrease the effect of acceleration, lowering the net force of acceleration acting on an object.Full Answer >
When a force is applied to an object resting on a surface, a retarding force is that which opposes the force being applied to the object. A retarding force is usually that of friction, which must be overcome when moving an object resting on a surface. If the object is being moved upward along an inclined plane, gravity represents an additional force that must be overcome.Full Answer >
Equilibrant forces are those that act on a body at rest and counteract the force pushing or pulling the body in the opposite direction. Equilibrant forces establish equilibrium for an object and make the object motionless. Equilibrant forces act on virtually every object in the world that is not moving.Full Answer >
A compound machine is made by combining two or more simple machines. Scissors is a compound machine because it's a combination of a wedge and a lever, which are both simple machines. The cutting edge of scissors is a wedge and the cutting force comes from a lever.Full Answer >